package com.ytheima;

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class CollectionsDemo {
    public static void main(String[] args) {
        test1();
    }
    public static void test2() {
        List<String> list = new LinkedList<>();
        Collections.addAll(list,"张三","李四","王五","赵六");
        list.forEach(System.out::println);

        System.out.println("-----------------------");
        //打乱集合顺序
        Collections.shuffle(list);
        list.forEach(System.out::println);
    }

    public static void test1() {
        List<Integer> list = new ArrayList<>();
        Collections.addAll(list, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
        //按照倒序排序
        Collections.sort(list);
        Collections.sort(list, (o1, o2) -> {
            return o2 - o1;
        });
        System.out.println(list);
        list.forEach(System.out::println);
        //让学生实现comparable接口,这样也能给学生排序
        System.out.println("-----------------------");
        List<Student> list1 = new ArrayList<>();
        list1.add(new Student("张三", 18));
        list1.add(new Student("李四", 19));
        list1.add(new Student("王五", 20));
        Collections.sort(list1);
        list1.forEach(System.out::println);

        List<Integer> synchronizedList = Collections.synchronizedList(list);


    }

}
